| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | was going on at the [noun] | 8 |
|
| 2 | [be] going on at the time | 7 |
|
| 3 | be going on at the time | 7 |
|
| 4 | was going [adv] at the time | 6 |
|
| 5 | [was/were] going on at the time | 5 |
|
| 6 | was going on [prep] the time | 5 |
|
| 7 | was going on at the time | 5 |
|
| 8 | was going on [prep] the time | 5 |
|
| 9 | was [v-ing] on at the time | 5 |
|
| 10 | was going on at [art] time | 5 |
|
| 11 | was [verb] on at the time | 5 |
|
| 12 | was go on at the time | 5 |
|
